Islamic State leaders are reportedly sneaking their jihadists from into Nigeria to train terrorists for possible attacks in Britain.

The Sun in the United Kingdom reported on Monday that Boko Haram fighters were also being sent to the Middle East for training.

According to report, there were fears that strong links between Nigeria and the UK would make it easier for ISIS to send its killers to Britain to carry out attacks.

The paper’s report also says over 150 British troops were conducting counter-terror training with Nigerian forces in an attempt to stem the bloody tide — and stop IS from taking hold of the West African region.

At one training mission in the northern city of Kaduna, a senior Nigerian Air Force commander revealed how local jihadist groups were learning from IS after swearing allegiance to its black flag.

“They come and train their fighters here and some of our insurgents too are granted access to their training in Yemen and Syria, acquiring those skills and they come back and teach others. They have this exchange programme of fighters,” said Group Captain Isaac Subi.

According to the report, the poisonous influence of the fighters had already ended in horror attacks on British streets, citing the stabbing to death of Fusilier Lee Rigby in 2013 in London by Michael Adebolajo and Michael Adebowale, both of Nigerian descent.

It is feared IS would exploit regular flights between Lagos and London to export more evil to the UK.

Subi further told the UK Sun that the lack of secure borders across Africa also made it easy to spread the bloodshed.